Tags: Artificialsatellite, Satellite.
Kosmos 523 (Russian: Космос 523 meaning Cosmos 523) known before launch as DS-P1-Yu No.63 was a Soviet satellite which was launched in 1972 as part of the Dnepropetrovsk Sputnik programme. It was a 325-kilogram (717 lb) spacecraft which was built by the Yuzhnoye Design Bureau and was used as a radar calibration target for anti-ballistic missile tests.Kosmos 523 was successfully launched into low Earth orbit at 11:30:00 UTC on 5 October 1972.